baber/WOPTO huggingface dataset:
Patent GB-1391870-A (GB)
Title: Process for the production of highpurity aromatics by liquid- liquid extraction and or extractive distillation from hydrocarbon mixtures
IPC: B01D3/40
Filed: 1973-11-22
Abstract: 1391870 Extraction of aromatics from mixtures HEINRICH KOPPERS GmbH 22 Nov 1973 [20 Dec 1972] 54374/73 Heading C5E In a process for separating aromatics from hydrocarbon mixtures by liquid-liquid extraction and/or extractive distillation using a watercontaining selective solvent the aromatics are separated from the solvent in a stripper column which is operated with a water reflux and with water introduced into the bottom part of the column, in an amount such that the trays above the extract phase introduction point are filled with water. A hydrocarbon feed 1 is separated at 2 by liquid-liquid extraction and/or extractive distillation into a non-aromatic top product 4 and an extract 5. The extract 5 is stripped at 6 to provide a recycle solvent stream 20 and an overhead 13. The overhead 13 separates at 14 into an aromatic phase, which can be further separated at 15, e.g. by distillation to provide benzene, toluene and xylene streams, and a water phase which is recycled in part as the reflux 21, in part as the stream 7 fed to the bottom of the column 6 and/or in part as the stream 19 which is mixed with the recycled solvent stream 20. A water stream 8 can be removed from the middle zone trays of the column and either recycled entirely as the stream 10 or partially evaporated at 9 to provide a vapour stream 11 and a residual liquid stream 10; this recycle reduces the concentration of solvent and solvent-decomposition products in the aromatic overhead 13. The amount of water added to the bottom of the stripper column can be 60-100% of the amount of water required for azeotropic distillation of the aromatics in the extract phase.
Patent GB-1516053-A (GB)
Title: Inhibitors for alkali-glass reactions in glass fibre reinforced cement products
IPC: C04B28/02
Filed: 1976-12-31
Abstract: 1516053 Glass fibre reinforced cement products W R BONSAL CO 31 Dec 1976 [16 July 1976] 54533/76 Heading C1H A cement mix suitable for high tensile strength applications, the mix being characterized by a resistance to alkali-glass reaction resulting in loss of tensile strength, comprises an inorganic cementitious binder containing at least one reactive alkali compound, glass reinforcement, and a finely divided alkali-reactive scavenger material, said scavenger containing silica as the major constituent thereof and having a reactivity with the alkali content of said binder which is substantially greater than the reactivity of said glass reinforcement therewith whereby the alkali content of said binder reacts with the scavenger material in preference to the glass reinforcement, and the amount of said scavenger material, based upon the silica content thereof, being at least in stoichiometric proportion to the alkali content of said binder. Exemplified scavenger materials are 30-325 mesh (U.S. sieve series) silica flour and powdered soda-lime glass.
Patent GB-1105370-A (GB)
Title: Improvements in and relating to disc brakes having exchangable brake rings
IPC: F16D65/12
Filed: 1965-12-24
Abstract: 1,105,370. Disc brakes. W. BUSCH, and H. FRIEDERICHS, [trading as BERGISCHE STAHL-INDUSTRIE OF REMSCHEID]. 24 Dec., 1965 [24 Dec., 1964], No. 54801/65. Heading F2E. A disc brake, particularly for rail vehicles, having readily exchangeable brake rings 23 on each side of a carrier disc or wheel 21 is characterized in that the carrier disc or wheel and each brake ring are connected bayonet fashion by interengaging concentric grooves 24 and projections 22, means such as bolts 26, being provided to prevent relative disc/ring rotation. In the embodiment illustrated, dovetailed section grooves are formed between segmental projections, Fig. 3 (not shown), on each brake ring for receiving mating projections on the wheel. A heat-insulating disc 30 may be interposed the mating grooves and projections and cooling ribs or vanes 31, Fig. 3 may be provided on the rear faces of the brake rings. Clearances 28 and 29 allow initial centering of the rings and accommodates thermal expansion. In a modification, Fig. 4 (not shown), the bolts 26 are eccentrically arranged in bushes 4 in the rings to accommodate manufacturing tolerances in the disposition of the disc or wheel bores 27 receiving said bolts. In alternative embodiments, Figs. 1 and Figs. 5-9 (not shown), the projections are formed on the brake rings and are received bayonet fashion in grooves or recesses formed on the carrier disc or wheel. In the embodiments of Figs. 5 and 8, the rings are circumferentially locked to the carrier disc or wheel by wedges (61), (85), which are passed radially through aligned openings in the walls of the projecting segments defining the grooves and in the mating projections and which are bolted to the rings. Cooling ribs or vanes are again provided on the rear face of each brake ring. The projecting segments defining the grooves and tho projections interengaging bayonet fashion therewith may be cast on or rolled on the carrier disc (or wheel) and rings. The braking outer face of the brake ring may lie in the same plane as, and extend to, the side wall of rail wheel rim to form a composite braking surface. In a further modification, Fig. 9 (not shown), the inner wall of the recesses (91) in a wheel disc (93) of a wheel (101) are defined by the hub of said disc and the brake rings 95 are locked against rotation relative to the disc by transverse members (98).
Patent GB-1160061-A (GB)
Title: Brassiere
IPC: A41C3/00
Filed: 1965-12-28
Abstract: 1,160,061. Brassieres. INTERNATIONAL PLAYTEX CORP. 28 Dec., 1965 [23 Feb., 1965], No. 54999/65. Heading A3V. A brassiere includes crossed tapes 30, 40 secured to each other at their crossing point 50 and each comprising an upper branch secured to one cup and a lower branch secured to the other cup, a horizontally-extensible underbust band 70 and a triangular insert 60 of stretchable fabric secured to the band 70 and to the edges of the tapes 30, 40. The insert is preferably of two way stretch fabric. The tapes are preferably elastic and are secured to the cups 10, 20 by two rows of stitches. The upper branches 31, 41 are slightly stretched as they are sewn and overlie the cup portions 11, 21 respectively by half their width. The lower branches 32, 42 overlie the cup portions 22, 12 respectively by their whole width.
Patent GB-1329024-A (GB)
Title: Apparatus for processing continuous plastics sheet or strip material to form a product suitable for extrusion
IPC: B26D1/38
Filed: 1970-11-19
Abstract: 1329024 Apertured extrusion roller H KOCH 19 Nov 1970 [5 March 1970] 55042/70 Heading B5A A cutting cylinder rotated on an axial shaft has openings 8 extending to the interior thereof, and defined between a lattice of bars 4, provided with sharp heated cutting edges 6 on the cylinder exterior which act to cut through, and fuse at the cut edges into continuous strands, successive coils 5 of scrap plactics sheet material 13 which is continuously wound on to the cylinder and forced against the edges 6 and through the openings 8 by the nip with one or more pressure rollers 9, the strands being divided and delivered axially from the cylinder interior, e.g. to storage or to an extruder, by a feed screw 10 located at a radial spacing 11 within the cylinder. The passages 8 may be of square, rectangular, circular, or oval section, and the sections of the bars 4 defining the passages 8 increase in section from the edges 6 either to the outlets of the passages, or to an intermediate location as shown. The bars 4 are provided with continuous passages, for heating the edges 6, which may contain electrical heating elements, or through which heating fluid may be circulated. A wider sheet 13 may be gathered together to the width of the cylinder.
Patent GB-1293133-A (GB)
Title: Pressure-activatable image formation
Inventor: HEUVAL WALTER AUGUST VAN DEN
IPC: B01J13/02
Filed: 1968-11-20
Abstract: 1293133 Pressure-sensitive recording process, and sheets for use therein AGFA GAVAERT NV 17 Nov 1969 [20 Nov 1968] 55081/68 Heading D2B In a pressure-sensitive recording process which comprises producing a coloured image in correspondence with pressure-activated portions of one or more recording materials by bringing together two reactants contained in the recording material(s) to form a dyestuff, one of the reactants is an oxidisable leuco dye or an amino compound in free base or salt form containing a primary or secondary amino group bound to a carbon atom forming part of a conjugated system, and the other reactant is a compound capable of yielding a hexacyanoferrate (III) ion. The formation of the dyestuff may be activated by the presence of an activating compound which provides a metallic ion under the conditions of formation of the dyestuff, the activating compound being a compound of Zn, Cd, Hg, Cu, Ag, Au or Pb. At least one of the reactants and possibly the activating compound may normally be kept separate from the other(s) by means of a pressure rupturable material, which may be in the form of microcapsules. The two reactants may be initially in contact with each other, for instance, in the same capsule, provided that the pH of the mixture is kept below 7, e.g. by means of acid stabilisers, and they are not in contact with the activating compound. A solvent for either or both of reactants, e.g. water is preferably incorporated into the recording material, or the microcapsules containing one or both of the reactants. Hygroscopic compounds, or compounds containing water in the form of water of crystallisation, may be incorporated into the recording material. The microcapsules containing one or more of the reactants may be attached to or incorporated in a paper sheet, the non-encapsulated components being applied by impregnation. Numerous examples of suitable leuco dyes and amino compounds are given. The pressurerecording sheets of the invention may be in the form of a manifold paper system.
Patent GB-1247377-A (GB)
Title: Equipment for preparing melamine
IPC: B01J8/24
Filed: 1968-11-21
Abstract: 1,247,377. Apparatus for preparing melamine. STAMICARBON N.V. 21 Nov., 1968 [21 Nov., 1967], No. 55384/68. Heading B1X. [Also in Division G3] An apparatus for preparing melamine from urea, comprising a reactor 1 fed through ring conduit 2 from lines 3, 4 and 5, a saturation cooler 7, a scrubber 8 and an absorber 9 fed by circulation conduit 6, is controlled by means of pneumatic pressure signals which are inversally proportional to pressure and flowrate, said signals being emitted by pressure-sensitive devices 18 and 21 which operate valves 12 and 15 respectively, a flow-rate-sensitive device 19 which operates valve 17, devices 18 and 19 being connected to a comparison element 20 which operates valve 16 in the vent line 11.
Patent GB-1350105-A (GB)
Title: Submerged-arc butt welding of square edged steel plates
IPC: B23K9/18
Filed: 1971-12-01
Abstract: 1350105 Welding by fusion KAWASAKI SEITETSU KK 1 Dec 1971 [14 Dec 1970] 55852/71 Heading B3R [Also in Division H2] To produce broad beads with minimum excess weld material in submerged-arc, square, butt welding from both sides, each side weld is effected in turn, by tandem electrodes at a travel speed of 50 to 120 cm./min, the leading electrode current I 1  and voltage V 1  being respectively 1000 to 2000 A and (I 1 -40)+15V to (I 1 /40) + 35V, and the hailing electrode current I 2  being I 1 /4 to 4I 1 /5A. The voltage and current may be the same or different for the two welding sides. The welding preparation is close or substantially close square. The high current and high voltage at the leading electrode effects deep penetration, broadening of the bead and reduction in excess weld metal, and the trailing electrode slows cooling rate of the first electrode deposited metal and reduces the angle between the curved surface of the bead and the workpiece surfaces. The leading electrode air gap may be increased with consequent increase in voltage and bead broadening. Power to the leading and trailing electrodes may be from an A.C. source, a D.C. source using straight or reverse polarity, or a combination of A.C. and D.C. sources. As shown, the leading and trailing electrodes L, T are supplied from the secondary windings of two transformers TR 1 , TR 2  each having a movable core MC by which, by modifying leakage reactance, output current is varied. V 1  may be D.C. from a rectifier at the TR 1  output (as shown), or A.C., the rectifier being dispensed with. In described examples, low M n  wire electrodes are used with a bonded basic flux mainly of alumina, magnesia, limestone and silica.
Patent GB-1465510-A (GB)
Title: Process of reforming hydrocarbon fuel into hydrogen-rich fuel
IPC: C01B3/22
Filed: 1974-12-31
Abstract: 1465510 Reforming hydrocarbon fuels NISSAN MOTOR CO Ltd 31 Dec 1974 [6 March 1974 (2)] 56136/74 Heading C5E In a process for preparing a gaseous fuel mixture comprising hydrogen and carbon monoxide by reaction of a liquid hydrocarbon fuel with oxygen and steam, the oxygen/steam mixture is produced and heated by the catalytic decomposition of hydrogen peroxide. As shown in Fig. 3, hydrogen peroxide is fed from a tank 12 to a catalyst chamber 16 where it is decomposed, the gaseous O 2 /H 2 O mixture produced being fed via a duct 37 to chamber 19 where it is reacted at burner 18 with hydrocarbon fuel (e.g. gasoline) fed from a tank 11. Any liquid water present in the oxygen/steam mixture may be separated at 35 and fed to the chamber 19 via heat exchanger 38, where it reacts with fuel fed from tank 11 via heat exchanger 25. In an alternative arrangement (Fig. 4, not shown), the separated water may be merely mixed with the product gases at the discharge port 24. A portion of the water may also be fed to the burner 18. The hydrocarbon fuel/oxygen/steam reaction may also be carried out by a catalytic process. In Fig. 5, for example, the gaseous oxygen/steam mixture from catalyst chamber 16 is fed together with fuel from tank 11 into a catalyst reaction chamber 45. The catalyst 46 is a conventional nickel catalyst where the fuel is, for example, gasoline or kerosene, or a chromium oxide/zinc oxide catalyst where the fuel is an alcohol such as methanol. The gaseous fuel mixture is fed via outlet 54 to an engine 34. The exhaust gases from the engine 34 are used to heat the catalyst 46 by means of heat exchanger 47. In a modification of this example, the catalyst in chamber 46 may be mixed with the catalyst for the hydrogen peroxide decomposition, in which case the catalyst chamber 16 is omitted. In a further embodiment (Fig. 2, not shown), the oxygen/steam hydrocarbon mixture is reacted in the combustion chamber of a two-stroke internal combustion engine.
Patent GB-567051-A (GB)
Abstract: 567,051. Gas burner igniters. POWNER, F. July 21, 1943, No. 11882. [Cla,ss 75 (iii)] A lighter for gas burners comprises two arms 10, 11 hinged together at 12, the arm 10 carrying at one end a serrated striking surface 14, such as a piece of a file 16, and the arm 11 carrying an openended tubular holder 16 containing a flint 17 pressed into contact with the striking sur. face by a preferably looped spring 18 secured to an abutment 19 on the arm 11. Sparks for igniting gas jets are produced by drawing the opposite ends of the arms together by means of a hand grip 10a and thumb piece 11a against the resistance of a spring 20 and then releasing the thumb piece 11a. Stops 21, 22 limit the movements of the arms. The striking surface 14 may have bevelled edges over which the sides of its housing 15 are bent and may be reversible.
Patent GB-1410076-A (GB)
Title: Illuminated switches
IPC: H01H23/02
Filed: 1972-12-08
Abstract: 1410076 Switch indicators SOC ANON AUTOMOBILES CITROEN 8 Dec 1972 [10 Dec 1971] 56903/72 Heading H1N A rocker switch control member 1, Fig. 1, pivoted at 2 and rockable between extreme positions has translucent indicator zones 4a, 4b thereon which are selectively illuminated from a common light source 7 in dependence on its position. Surface 9a, 9b of the projection 6 and end surfaces 10a, 10b all of which are rockable conjointly with the control member are treated to be reflective, or have reflective surfaces formed in the plastics moulding, to form means whereby the indirect light rays emerging through the aperture in the shroud 8 are deflected towards the selected position indicator zone for the switch control member. Alternatively the control member may be of transparent material with projection 6 acting dioptically to provide refraction and reflection for the light rays. Another embodiment, Fig. 3, uses clusters of optical fibres 11a, 11b incorporated within the control member to transmit the light signal and to portray it in any required manner such as the arrow shape 14. An optical tube receiving light from a remote source can be used in place of source 7 and all such sources may be flashing and may be switched on by movement of the control member.
Patent GB-1301169-A (GB)
Title: Certain substituted 2-hydroxybenzo-phenoximes and the process of extracting copper therewith
Inventor: MATTISON PHILIP LEROY
IPC: C01G3/00
Filed: 1970-12-01
Abstract: 1301169 Hydroxy benzophenoximes GENERAL MILLS Inc 1 Dec 1970 57082/70 Heading C2C [Also in Division C1] The invention comprises compounds of the formula where R and R<SP>1</SP> are each R<SP>11</SP> or OR<SP>11</SP> where R<SP>11</SP> is a saturated aliphatic group of 1-25 carbon atoms or an ethylenically unsaturated group of 3-25 carbon atoms, E is an electron withdrawing substituent, p is 1-4, m is 0 or an integer up to 4-p, n is 0-4, the compound having a total of at least 3 carbon atoms in R m  and R<SP>1</SP> n , the electron withdrawing substituent substantially increasing the efficiency of the compound as a copper extractant from aqueous solutions having a pH less than about 1À0, wherein the compound is essentially insoluble in water and has both alone and in its copper complex a solubility of at least about 2% by weight in an essentially water-immiscible organic solvent. The compounds are prepared from the corresponding benzophenones by reaction with a hydroxylamine salt. The invention further comprises mixtures of the hydroxy benzophenoximes with compounds of the formula where R<SP>1</SP> and R<SP>2</SP> are organic radicals and R<SP>3</SP> is H or an organic radical, this oxime being essentially insoluble in water and having both alone and as its copper complex a solubility of at least 2% by weight in an essentially water-immiscible organic solvent.
Patent GB-1433490-A (GB)
Title: Application of lubricant to the rolls of a rolling mill
IPC: B21B27/10
Filed: 1973-12-11
Abstract: 1433490 Lubricating rolling mills BRITISH STEEL CORP 10 Dec 1974 [11 Dec 1973] 57338/73 Heading B3M [Also in Division B2] Lubricant is sprayed from nozzles 20 on to the surface of a rolling mill roll 12, the lubricant being atomized by introducing steam under pressure into the nozzles. Each nozzle 20, Fig. 5, is mounted on a tubular support arm 23 through which steam is fed, the lubricant being supplied by a pipe 32 and inlet 21. The nozzles of each array are connected to a common support tube 13 acting as a steam header. The tube is pivotable about bearings 14 at its ends by pneumatically operated cylinders 17 and 18. The nozzles are pivotable between positions in which they face the roll, and inoperative positions suitable for roll changing. The supply of lubricant to the nozzles may be made dependent on the presence of strip in the mill, pressurization of the mill hydraulic system, or operation of the roll drive motors. Similar arrays of nozzles are provided on each side of both upper and lower rolls of a mill, the rolls having work stripper guides 40 associated with them.
Patent GB-1170820-A (GB)
Title: Drying of Polyolefins
Inventor: JAMES RALPH
IPC: C08F6/00
Filed: 1967-12-19
Abstract: 1,170,820. Drying wet particulate polymers, rotary filter. ESSO RESEARCH & ENG. CO. 19 Dec., 1967, No. 57623/67. Headings BIB and B1D. [Also in Division C3] Solid particulate polymer, e.g. polyethylene or polypropylene, which is wet with liquid hydrocarbon, such as xylene, is dried by admixing the wet material with steam, at a temperature of at least 150‹F., in conduit 22 so that a suspension of polymer particles in the steam passes through the conduit at a velocity from 40 to 160 feet per second and the hydrocarbon vaporizes, and subsequently separating the dried particles from the vapour in cyclone 35. The amount of steam should be not greater than 4 pounds per pound of hydrocarbon removed from the polymer. The slurry of polymer in hydrocarbon, discharged from the polymerization reactor, is first passed through line 11 into rotary filter 13. The filter cake is washed with solvent introduced through line 14. The operations in the filter may be observed with a TV camera. The wet filter cake is fed through line 19 to conduit 22. Line 19 may be a metal braided hose lined with polytetrafluoroethylene. The conduit 22 is supplied with wet steam through valve 24, and with gases through line 25. A neutralizer, such as solution of NaOH, CH 3 ONa or Ba(OH) 2 , may be added through line 10. The upstream end of conduit 22 is preferably lined with polytetrafluoroethylene. Water is removed from the conduit at 28, and secondary steam is injected at 29. The downstream end of conduit 22 is provided with steam-jackets 30. . 34. The polymer removed from cyclone bin 38 is passed to rotary dryer 42 for the removal of residual hydrocarbon. The vapours from cyclones 35 and 44 are passed through cyclone 50 to condenser 57, and the hydrocarbon condensate is discharged by pump 70. Gases are recycled from the condenser to conduit 22 via line 25.
Patent GB-1371074-A (GB)
Title: Combined flashlight and chemical expelling device
IPC: F21V33/00
Filed: 1971-12-13
Abstract: 1371074 Electric battery lamps; discharging noxious liquids C W VICKERS 13 Dec 1971 57840/71 Headings F3C and F4R A torch 11 is secured to a container 17 in which an aerosol can 33 of tear gas or the like is disposed, the dispensing valve 34 of the can being in communication with a conduit 27-30 which has an outlet nozzle 31 pointing in the same general direction as the light beam from the torch. Tear gas is discharged by operating a knob K, e.g., by pressing it against the user's chest, so that the can 33 is moved towards the valve 34. A safety clip 22 is normally engaged in a groove 23 in the shaft S to prevent inadvertent depression of the knob.
Patent GB-1494732-A (GB)
Title: Odometers
IPC: G01C22/02
Filed: 1973-12-14
Abstract: 1494732 Counting apparatus; odometers; memorizing counts SMITHS INDUSTRIES Ltd 14 March 1975 [14 Dec 1973] 57951/73 Heading G4D An electric odometer comprises a counter 12a-12f counting pulses representing increments of distance travelled and a semi-conductor memory 23a-23f arranged to store the last state of the counter whenever the circuit is unpowered and to reset the counter to said last state when power is restored. The semiconductor memory is in the form of a set of MNOS (metal-nitride-oxide-semi-conductor) transistors (Fig. 2, not shown) capable of storing a charge for several months with or without a power supply. A control circuit 11 produces one output pulse on line 13 (at the rate of 10 per mile) to counter 12 for every four input pulses. During the period of the other three input pulses circuit 11 first produces "write" pulses which cause the state of counter 12 to be read into the memory 23 by applying + 30 v. or - 30 v. pulses to the gate electrodes of the MNOS transistors according to whether the BCD output of the corresponding counter stage is 0 or 1. Then the circuit 11 generates a read and preset pulse which causes the counter to be preset to the value in the memory. The memory transistors are read by applying - 5 v. to the gate electrode. If a charge is stored, indicating a binary 1, then the transistor does not conduct, otherwise it does. The state of counter 12 is displayed at 20 by way of BCD to seven segment or other decoder 17. The pulses may also be supplied to a four decade resettable trip meter.